University of Oulu

S. Ahmad et al., "A Metasurface-Based Single-Layered Compact AMC-Backed Dual-Band Antenna for Off-Body IoT Devices," in IEEE Access, vol. 9, pp. 159598-159615, 2021, doi:

A metasurface-based single-layered compact AMC-backed dual-band antenna for off-body IoT devices

Saved in:
Author: Ahmad, Sarosh1,2; Paracha, Kashif Nisar2; Sheikh, Yawar Ali2;
Organizations: 1Department of Signal Theory and Communications, Universidad Carlos III de Madrid, Leganés, 28911 Madrid, Spain
2Department of Electrical Engineering and Technology, Government College University Faisalabad (GCUF), Faisalabad 38000, Pakistan
3Department Electrical and Electronic Engineering, Auckland University of Technology, Auckland 1010, New Zealand
4Advanced Communication Engineering (ACE) CoE, Faculty of Electronic Engineering Technology, Universiti Malaysia Perlis, Perlis 01000, Malaysia
5Centre for Wireless Communications (CWC), University of Oulu, 90014 Oulu, Finland
6Department of Electrical Engineering, College of Engineering, King Saud University, Riyadh 11451, Saudi Arabia
7Electric, Electronic and Communication Engineering Department, Public University of Navarre, 31006 Pamplona, Spain
8Institute of Smart Cities, Public University of Navarre, 31006 Pamplona, Spain
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 3.5 MB)
Persistent link:
Language: English
Published: Institute of Electrical and Electronics Engineers, 2021
Publish Date: 2022-01-04


In this article, a compact printed monopole dual-band antenna using artificial magnetic conductor (AMC)-plane with improved gain and broader bandwidth, applicable for off-body internet of things (IoT) devices is presented. The monopole antenna consists of two C-shaped resonators connected through a U-shaped monopole, parasitic elements, discrete ground circular rings and a co-planar waveguide (CPW) feedline. Each artificial magnetic conductor (AMC) unit cell consists of a slotted circular and a square stubs, designed with two zero-crossing phases for improving the radiation characteristics and to achieve the high gain. The overall size of the proposed AMC-backed antenna is 44.4 mm ×44.4 mm ×1.6 mm with electrical dimensions of 0.75λg ×0.75λg × 0.027λg. This AMC-backed antenna featured measured bandwidths of 9.6% and 12.4% with improved measured gain values of 4.88 dB and 4.73 dB at 2.45 GHz and 5.8 GHz, respectively. The specific absorption rate (SAR) values are analysed and found to be 1.58 W/kg at 2.45 GHz and 0.9 W/kg at 5.8 GHz. Therefore, the proposed AMC-backed antenna is useful for off-body IoT devices operating at 2.45 and 5.8 GHz industrial, scientific, and medical (ISM) band applications.

see all

Series: IEEE access
ISSN: 2169-3536
ISSN-E: 2169-3536
ISSN-L: 2169-3536
Volume: 9
Pages: 159598 - 159615
DOI: 10.1109/ACCESS.2021.3130425
Type of Publication: A1 Journal article – refereed
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This work was supported in part by the Universidad Carlos III de Madrid; in part by the European Union’s Horizon 2020 Research and Innovation Programme under Marie Sklodowska-Curie Grant 801538; in part by the Ministerio de Ciencia, Innovación y Universidades, Gobierno de España (MCIU/AEI/FEDER and UE) under Grant RTI2018-095499-B-C31; and in part by the Researchers Supporting Project, King Saud University, Riyadh, Saudi Arabia, under Project number RSP-2021/58.
Copyright information: © The Authors 2021. This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see